big–eyed bug

Definition of big–eyed bug

: a bug of the family Lygaeidae; especially: any of several bugs (genus Geocoris) that have protuberant eyes which project backward over the pronotum and feed especially on aphids and leafhoppers Ground beetles and big-eyed bugs are actually beneficial and help to keep pest insects under control. — Eleanor Foerste, Orlando Sentinel, 19 Nov. 1994The big-eyed bug preys on spider mites (Tetranychus species), serious pests of the cotton plant. — Science News, 26 July 1997